If is an acute triangle, all the angles should be acute angles.
180-38=142°
142-69=73°
So your answer is 69°, lovely~
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Answer:
If should be 10.4 for c and -3558.4 for the total answer
Step-by-step explanation:
By using the theorem

You will get 10.4.
Now plugging that number to that other formula, I got -3558.4
Hope this helped
Answer:
5 ft : 3 ft
Step-by-step explanation:
Ratios are always fractions so we can turn this to a fraction;
Then to reduce to it's lowest terms divide by a number that can divide both of them. Lets divide by 2 since it can divide the two numbers
We can still divide by 2 since it can divide both numbers = 
Since no number can divide both of them at the same time the answer is
OR 5 ft : 3 ft
Answer:
720 m²
Step-by-step explanation:
Area = base × height
= 12 × 6
= 72 mm²
≈ 720 m² (1 mm = 10 m)